Reusing Pistachio Shells: How to Turn Them Into Powder and Use It in Your Garden

in small batches until the shells reach the texture you want. A coarse powder is generally sufficient for most gardening uses.

Ways to Use Pistachio Shell Powder in the Garden
1. Mix It Into Compost

Pistachio shell powder can be added to a compost pile as a carbon-rich (“brown”) material. Because the shells are ground into smaller pieces, they’ll break continue reading …